typelevel/spire

Powerful new number types and numeric abstractions for Scala.

finagle/finch

Scala combinator library for building Finagle HTTP services

japgolly/scalajs-react

Facebook's React on Scala.JS

julien-truffaut/monocle

Optics library for Scala

scala-steward-org/scala-steward

:robot: A bot that helps you keep your Scala projects up-to-date

notxcain/aecor

Pure functional event sourcing runtime

pepegar/hammock

Purely functional HTTP client

cb372/cats-retry

augustjune/canoe

Functional Telegram Bot API for Scala

ovotech/fs2-kafka

Functional Kafka Streams for Scala

alonsodomin/cron4s

Cross-platform CRON expression parsing for Scala

circe/circe-yaml

YAML parser for circe using SnakeYAML

rmsone/slick-cats

Cats instances for Slick DBIO

davegurnell/checklist

Validation library for Scala.

circe/circe-golden

Golden testing for Circe

vladkopanev/cats-saga

Purely Functional Transaction Management In Scala With Cats

vpavkin/dtc

Provides type classes for datetime values. Works both on JVM & ScalaJS.

geirolz/advxml

A lightweight, simple and functional library DSL to work with XML in Scala with Cats

circe/circe-optics

Monocle lenses and other tools for working with JSON values

ovotech/vulcan

Functional Avro for Scala